NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/20/2026

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

Most carrier growth happens here, not at the prefix level: under number pooling, carriers receive individual 1,000-number blocks (e.g. 626-470-0XXX) within already-assigned prefixes. Assignments are initial assignments — the current serving carrier of individual numbers may differ due to portability.

Most active assignees, all time — NPA 248
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 520
NEW CINGULAR WIRELESS PCS, LLC - IL 384
ONVOY, LLCV - MI 332
OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 287
METROPCS, INC. 227
New assignments by month Sep 2026 Aug 2026 Jul 2026 Jun 2026 May 2026 Apr 2026 Mar 2026 Feb 2026 Jan 2026 Dec 2025 Nov 2025 Oct 2025
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Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2011-11-09 248-606-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J AUBURN HTS MI
2011-11-09 248-716-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J COMMERCE MI
2011-11-09 248-862-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J W BLOOMFLD MI
2011-11-04 248-205-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BIRMINGHAM MI
2011-11-02 248-859-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J WALLEDLAKE MI
2011-10-21 248-327-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 SOUTHFIELD MI
2011-10-21 248-862-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C W BLOOMFLD MI
2011-10-17 248-957-6XXX 6000–6999Assigned BHN IP ENABLED SERVICES, LLC 045L FARMINGTON MI
2011-10-10 248-416-3XXX 3000–3999Assigned METROPCS, INC. 5562 SOUTHFIELD MI
2011-10-10 248-469-9XXX 9000–9999Assigned METROPCS, INC. 5562 SOUTHFIELD MI
2011-10-10 248-677-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J ROYAL OAK MI
2011-10-05 248-581-5XXX 5000–5999Assigned 123.NET, LLC 2550 ROYAL OAK MI
2011-10-04 248-513-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 NORTHVILLE MI
2011-10-04 248-878-2XXX 2000–2999Assigned GRID 4 COMMUNICATIONS, INC. - MI 9714 TROY MI
2011-09-26 248-266-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J ROCHESTER MI
2011-09-23 248-205-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BIRMINGHAM MI
2011-09-23 248-792-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J BIRMINGHAM MI
2011-09-15 248-513-0XXX 0000–0999Assigned METROPCS, INC. 5562 NORTHVILLE MI
2011-09-15 248-513-1XXX 1000–1999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 NORTHVILLE MI
2011-08-30 248-513-6XXX 6000–6999Assigned AT&T ENTERPRISES, LLC 516C NORTHVILLE MI
2011-08-29 248-554-5XXX 5000–5999Assigned METROPCS, INC. 5562 ROYAL OAK MI
2011-08-29 248-554-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 ROYAL OAK MI
2011-08-22 248-513-4XXX 4000–4999Assigned CHARTER IP ENABLED SERVICES, LLC 792K NORTHVILLE MI
2011-08-15 248-817-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J TROY MI
2011-08-12 248-513-5XXX 5000–5999Assigned METROPCS, INC. 5562 NORTHVILLE MI
2011-08-08 248-558-0XXX 0000–0999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 CLARKSTON MI
2011-08-08 248-558-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 CLARKSTON MI
2011-08-03 248-430-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 BIRMINGHAM MI
2011-08-02 248-795-4XXX 4000–4999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 CLARKSTON MI
2011-07-29 248-554-1XXX 1000–1999Assigned ONVOY, LLCV - MI 543C ROYAL OAK MI
2011-07-22 248-463-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BIRMINGHAM MI
2011-07-22 248-971-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BIRMINGHAM MI
2011-07-19 248-262-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J SOUTHFIELD MI
2011-07-15 248-513-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 NORTHVILLE MI
2011-07-15 248-678-1XXX 1000–1999Assigned METROPCS, INC. 5562 AUBURN HTS MI
2011-07-15 248-795-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 CLARKSTON MI
2011-07-11 248-392-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 PONTIAC MI
2011-07-11 248-392-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 PONTIAC MI
2011-07-11 248-602-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 TROY MI
2011-07-08 248-567-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 NORTHVILLE MI
2011-06-21 248-987-7XXX 7000–7999Assigned BHN IP ENABLED SERVICES, LLC 045L FARMINGTON MI
2011-06-14 248-392-6XXX 6000–6999Assigned METROPCS, INC. 5562 PONTIAC MI
2011-06-14 248-392-7XXX 7000–7999Assigned METROPCS, INC. 5562 PONTIAC MI
2011-06-09 248-274-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E OXFORD MI
2011-06-09 248-397-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J ROYAL OAK MI
2011-06-09 248-602-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 TROY MI
2011-06-09 248-602-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 TROY MI
2011-06-09 248-716-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E COMMERCE MI
2011-06-09 248-979-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BIRMINGHAM MI
2011-06-03 248-305-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 NORTHVILLE MI

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.